Lock and latch mechanism.



No- 830,118. PATENTED SEPT. 4, 1906.

H. G. VOIGHT. LOCK AND LATCH MECHANISM.

APPLICATION FILED JULYIQ, 1905- 2 SHEETS-SHEET l.

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III (J .17 f4 I F LI| I: 1 if *"gLJ' 1 H WWW l I I' l I No. 830,118- PATENTED SEPT. 4, 1906. H. G. VOIGrHT.

LOOK AND LATCH MECHANISM.

APPLICATION FILED JULYlQ, 190s.

2 SHEETHBHBBT 2.

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HENRY G. VOIGHT, OF NEW BRITAIN, CONNECTICUT, ASSIGNOR TO RUSSELL 86 ERIVIN MANUFACTURING COMPANY. OF NEW BRIT- AIN, CONNECTICUT, A CORPORATION OF. CONNECTICUT.

Specification of Letters Patent.

Patented Sept. 4:, 1906.

Application filed July 19,1905. Serial No. 270,305.

To (/7/ n'lmm if 'llt/r concern:

Be it known that I, HENRY G. VoIGHT, a citizen of the United States, residing at New Britain, county of Hartford, State of Connecticut, have invented certain new and useful Imprc ements in Look and Latch Mechanism, of which the following is a full, clear, and exact description.

My invention relates to improvements in latch mechanism, and particularly to latch mechanism suitable for what is termed a "communicating door. In such doors separating adjacent rooms it is desirable to have means for permitting the occupant of either room to lock his door securely against intrusion from the adjacent room.

It is the obect of my invention to provide a simple and effective means for accomplishing this end.

My invention relates to combining this means with a lock of the type in which the frame is formed by the outside plates rather than by a case which is inserted into a mortise in the door, and while relating to the type of locks lirst referrezl to it is of great impor tance, particularly as applied to an adjustable lock of said type in which one of the side plates has a capacity of adjustment to and fro, so that the lock may be applied to doors of different thicknesses.

In the drawings, Figure 1 is a plan View of my invention. Fig. 2 is a-front end elevation. Fig. 3 is a section on the line 3 3 looking in the direction of the arrows. Fig. 4 is a fragmentary view in section on the line 4 l.

A A are frame-plates.

B is an end plate rigidly carried by the plate A. The plate A is adjustable to and fro relatively to plate A, so that the lock may be fitted to doors of different thicknesses.

C is the ordinary latch, operable by means of knobs D D, carried, respectively, by plates A A. The knobs operate through the medium of a latch-slide E, engaged by rollback mechanism, such as F. The slide E may be engaged directly with the latch C, so that when the roll-back mechanism is turned out of the position shown in Fig. 3 the latch will be retracted.

G is a spring for advancing the latch-slide.

H H are dead-bolts which are capable of being reciprocated through the face-plate B, the said dead-bolts being suitably guided thereby. The operating mechanism for these dead-bolts is mainly carried by the rigid plate A, one part only being carried by the adjustable side plate A. These features will now be described in detail. 4

I I are hubs both of which are supported at one end by the face-plate A and may reccive a further support, as by a bracket J, for the opposite ends, said bracket J being carried by the rear side of the face-plate B or an extension thereof. Since the bolts II II and the hubs I I bear a fixed relation relatively to the face-plate A, the adjustment of the lock to doors of different thicknesses will not disturb said members. The hubs I I are each separately connected with the bolts II II, respectively, by means of links K K, one end of each of said links being connected to its bolt, the other end being connected to an eccentric or crank extension on its hub. The hubs I I are respectively provided with noses L L, which serve to frictionally hold, with the aid of springs M M, either of said hubs I I in the locked or unlocked position.

N N are thumb-turns for the hubs I I, respectively. The thumb-turn N need not have an adjustable relation with the hub I, since both of said parts are carried by the rigid side plate A. The thumb-turn N, however, being carried by the adjustable plate A has a telescopic adjustable connection with the hub I. Hence as the adjustable plate A is moved to and fro the spindle of the thumbturn N slides in and out of its respective hub and adapts itself readily to the desired adjustment.

From the foregoing it w ill be seen that the construction has particular reference to a special type of lock, in which combination it serves many useful purposes, providing in one and the same structure simple and effective means for dead-locking the door to which the latch is applied from either side. It should be said that when either dead-bolt II or H is thrown into the locked position the link and the eccentric arm carried thereby are alined, so that the centers of the hub and link will substantially coincide, thus making it impossible to push back either of the bolts by means of a thin blade inserted between the face-plate of the lock and the strike-plate, with which such locks are commonly equipped Any suitable means maybe employed to prevent the accidental removal of the thumturns N N from their intended position, such means being well known.

As a strengthening reinforce and guide for the dead-bolts H H I may provide rods 0 0, respectively. These rods may be rigidly connected with the respective bolts and may in turn project through a guide-passage forming part of the rigid side plate A. For compactness sake the hubs directly to the rear of either of said guide-rods may be cut away, as indicated at P, Fig. 4, so that when the bolt is retracted the guide-rod will assume the position assumed by the guide-rod O. (Shown in Fig. 1.)

What I claim is 1. In a lock and latch mechanism, a side plate, an end plate rigidly connected thereto, an adjustable side plate, a latch, a plurality of dead-bolts carried by said end plate, a hub for each bolt, said hubs being carried by the rigid side plate, a hub-operating device carried by said rigid plate and engaging one of said hubs, a second hub-operating device for the other hub, the last-mentioned operating device being carried by the adjustable plate, and an adjustable connection between said last-mentioned operating device and its hub.

2. In a lock and latch mechanism, a side plate, an end plate rigidly connected thereto, an adjustable side plate, a latch, a plurality of dead-bolts carried by said end plate, a hub for each bolt, a hub-operating device carried by said rigid plate and engaging one of said hubs, a second hub-operating device for the other hub, the last-mentioned operating de vice being carried by the adjustable plate, and an adjustable connection between said last-mentioned operating device and its hub.

3. In a lock and latch mechanism, two side plates, a knob rotatably carried by each side plate, an end plate secured to one side plate and forming with it a rigid frame, laterallyadjustable means of connection between said frame and the opposite plate, a latch-bolt, operable means of connection between said latch-bolt and said knobs, and two independent lockingbolts carried by said frame and adapted to protrude throu h said end plate, and a thumb-turn carried I y each side plate, and operative means of connection bejtaween said thumb-turns and said lockingolts.

' 4. A lock and latch mechanism comprising side plates, an end plate secured to one side plate and forming with it a rigid frame, a latch-bolt and two locking-bolts extensible through said end plate, a knob carried by each side plate, operative means of connection between said knobs and said latch-bolt, a thumb-turn carried by each side plate, one thumb-turn being not .in line with the other operative means of connection between said thumb-turns and said locking-bolts adjustable to doors of different thicknesses.

5. A look and latch mechanism comprising two side plates and an end plate, a latch-bolt and two locking-bolts extensible through said end plate, a latch-slide carried by the inner side plate, a knob carried by each side plate, means of connection between said knobs and said latchslide, and two separate means not in line with each other for operating said locking-bolts independently of each other and independently of said knobs, including parts adapting said operating mechanism to be adjusted to doors of different thicknesses.

6. In a lock mechanism, two plates adapted to the opposite sides of a door and adjustable to and from each other, an end plate secured to one side plate and forming with it a frame, two locking-bolts carried by said frame and adapted to protrude through said end plate, hubs carried by said frame for ex tending and retracting said bolts, means for holding said bolts in their extended or retracted positions, and separate operating means for said hubs for retracting and extending said bolts independently from the opposite sides of the mechanism, one of said operating means being carried by one side plate and the other operating means being carried by the other side plate.

7. In a lock mechanism, two side'plates adapted to the opposite sides of a door, an end plate secured to one side plate, two locking-bolts adapted to protrude through said end plate, two operating-hubs having 6ne end of each supported by one side plate, means carried by the end plate for supporting the other ends of said hubs, and means of connection between said hubs and said bolts.

HENRY G. VOIGHT.

Witnesses:

M. S. WIARD, C. E. RUssELL. 

